Comparative study of electrochemical methods for determination of methanol permeation through proton-exchange membranes

Zaidi, S. M. Javaid (2011) Comparative study of electrochemical methods for determination of methanol permeation through proton-exchange membranes. Arabian Journal for Science and Engineering, 36 5: 689-701. doi:10.1007/s13369-011-0085-1


Author Zaidi, S. M. Javaid
Title Comparative study of electrochemical methods for determination of methanol permeation through proton-exchange membranes
Journal name Arabian Journal for Science and Engineering   Check publisher's open access policy
ISSN 1319-8025
2191-4281
Publication date 2011-08
Sub-type Article (original research)
DOI 10.1007/s13369-011-0085-1
Open Access Status
Volume 36
Issue 5
Start page 689
End page 701
Total pages 13
Place of publication Heidelberg Germany
Publisher Springer
Language eng
Formatted abstract
In this work, methanol permeation rates were measured using various electrochemical techniques, namely, cyclic voltammetry, chronoamperometry and potentiometry. For all the methods, a Nafion® 117 membrane was used to measure and evaluate methanol crossover rates. The purpose of this study is to compare the methanol permeation data obtained using the above-mentioned techniques under identical conditions, compare the data with the literature data, and then suggest the most accurate and reliable method for the determination of methanol crossover rates. The permeability values using these techniques were found to be in the range 1.11 × 10−6 to 1.27 × 10−6 cm2/s. The permeability values obtained using these techniques are close to one another and also compare well with the literature data for similar conditions; however, after careful screening of the data, it was found that the potentiometric technique is the easiest in terms of experimentation, reproducibility of results and accuracy, and gives more data points. This technique is suggested to be the best and most accurate for studying methanol permeation rates through membranes for direct methanol fuel cell applications.
Keyword Direct methanol fuel cell
Methanol crossover
Polymer electrolyte membranes
Electrochemical techniques
Ether Ketone Membranes
Q-Index Code C1
Q-Index Status Provisional Code
Institutional Status Non-UQ

Document type: Journal Article
Sub-type: Article (original research)
Collection: School of Chemical Engineering Publications
 
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